Apparelsales Mens Compression Workout Running Drawstring Shorts Briefs Trunks Material:100% Quick-drying polyesterproduct style:mens sport clothing Breathable,absorbent,quick dry,it is better to wash by cold Water and hand Wash Small: Waist(26"-30"),Medium: Waist(30"-34"),Large: Waist(34"-38")X-large: Waist(38"-40") It fits for cycling,yoga,swiming,running,sleep lounge It is better you tell me your body size to hep you choose right size